No, crypto could be a problem, but RAS is Remote Access Service, and even if you had (or if you have??) a modem, you probably don't want a Windows program to control it.Ok, I eventually figured out you're having a problem with the store. Don't know if it works.

If all you want is unlocking a champion, enter your profile stats, go into the champions tab, open a champion card and unlock it from there.

If you want to buy a skin or runes, try running LoL under wine-1.5.22 or newer. It SHOULD work from there - at least it does work for me. Just remember to switch wine back to 1.5.18 before trying to play - unpatched versions of wine will crash the game on certain occasions, like opening the in-game shop.

I did write a request to add patched wine-1.5.24 or 1.5.22 to POL repositories to make it work (also, I personally get more FPS under 1.5.24 - only the in-game shop is an issue), but for now, you probably have to switch to access shop. Don't know whether or not any of the patched wines available at the moment support both the game and the shop.